CN217996988U - Arrange a mouthful normal position clean system - Google Patents

Abstract

The utility model relates to a row's mouth normal position clean system, including water conservancy diversion passageway, flocculation and precipitation district, grid, aerobic area, undercurrent infiltration dam, membrane reaction zone and overflow water outlet, the utility model discloses a set up the water conservancy diversion passageway and arrange the technology combination and be applied to row's mouth and handle, arrange the mouth pollution with the mixed flow and confine the mixed flow to in the water conservancy diversion passageway, through flocculation and precipitation district, grid, aerobic area, undercurrent infiltration dam, membrane reaction zone, each process flow in overflow water outlet handles the back, can get rid of suspended solid, organic matter, pollutants such as nitrogen phosphorus in the mixed flow row's mouth water outlet, effectively reduce the pollution volume of going into the river, promote the treatment effeciency of pollutant, and then the very big pressure of receiving water such as river course of alleviating has the service life length simultaneously and has the characteristics that the view beautifies concurrently.

Description

Arrange a mouthful normal position clean system

Technical Field

The utility model relates to a technical field, especially a row's mouth normal position clean system are administered to water environment.

Background

The water environment treatment effect of water bodies such as a river channel is determined by the onshore source control sewage interception strength. However, in some old cities, as the rain and sewage in the production and living areas are not completely shunted, a large amount of production and living sewage is mixed into a rainwater pipeline to form a rain and sewage converging drainage port while rainwater is drained into water bodies such as a river channel and the like through a pipe network in rainy seasons, and as the mixed flow drainage port has large instantaneous flow and high pollution load, the mixed flow drainage port directly enters surface water bodies (river channels, lakes or reservoirs), so that large pollution pressure is brought to the surface water bodies.

In order to promote water environment treatment and control external source pollution load, aiming at the problem of mixed flow and discharge of rain and sewage, the treatment method mainly adopts biotechnology, floating bed technology, aeration technology and small-sized treatment devices at present, but the treatment method has the problems of short service life, poor landscape, poor impact load resistance, lower adaptability and the like, and the problem of mixed flow of rain and sewage into a river cannot be quickly, efficiently and durably solved.

Therefore, the design can be fast and intensively processed, the load impact resistance is stronger, the service life is long, and the exhaust in-situ purification system with the landscaping effect has important significance.

SUMMERY OF THE UTILITY MODEL

The not enough that exists to prior art, the utility model provides a row's mouth normal position clean system is applied to row's mouth through setting up the water conservancy diversion passageway and arranging the technology combination and handles, and limit to the mixed flow row mouth and pollute in the water conservancy diversion passageway, through flocculation and precipitation district, good oxygen district, membrane reaction zone, each process flow in overflow water outlet district handles the back, can effectively reduce and pollute the volume of going into the river, promote the treatment effeciency of pollutant, and then the very big pressure of receiving the water such as alleviating the river course, have the advantage that the service life is long, still can have the characteristics that the view beautifies concurrently.

The technical scheme for solving the problems is as follows:

a discharge port in-situ purification system comprises a flow guide channel, a flocculation precipitation zone, a grid, an aerobic zone, a subsurface flow percolation dam, a membrane reaction zone and an overflow water outlet zone;

the flow guide channel is used for guiding the water discharged from the mixed flow discharge outlet to and limiting the water in a specific channel so as to avoid pollution diffusion;

the inlet of the flocculation precipitation area is communicated with the flow guide channel and is used for realizing flocculation precipitation of organic matters and suspended particles in the water discharged from the mixed flow discharge port;

the grid is arranged at the outlet of the flocculation and precipitation zone and is used for intercepting floating objects in the effluent of the flocculation and precipitation zone;

the aerobic zone inlet is communicated with the outlet of the flocculation precipitation zone and is used for carrying out aerobic treatment on the water body intercepted by the grid;

the undercurrent percolation dam is arranged between the outlet of the aerobic zone and the inlet of the membrane reaction zone and is used for removing particles in the effluent of the aerobic zone;

the inlet of the membrane reaction zone is communicated with the outlet of the aerobic zone, and the bottom of the membrane reaction zone is provided with a water outlet pipe for carrying out biofilm treatment on the water body passing through the undercurrent percolation dam;

and the inlet of the overflow water outlet area is communicated with a water outlet pipe at the bottom of the membrane reaction area, and water entering the overflow water outlet area is extruded by space and overflows upwards and is discharged.

In some embodiments of the present invention, the wall of the diversion channel is a brick-concrete structure, a watertight enclosure, or a double-row wooden pile filled with filler.

In some embodiments of the present invention, the flocculation settling zone is provided with an automatic dosing device for adding a flocculating agent.

In some embodiments of the present invention, the bottom of the flocculation settling zone is provided with a sludge zone for periodic sludge discharge.

In some embodiments of the present invention, the grid comprises a grid body, a fixed pier and an inclined strut, the fixed pier is arranged at the bottom of the grid body to a height of 2/3, the top of one end of the inclined strut is fixedly connected with the top of the grid body, the other end of the inclined strut is fixed on the horizontal plane of the bottom end of the fixed pier, and the grid body, the horizontal plane of the bottom end of the fixed pier and the inclined strut form a triangular stable structure; 1/3 of the height of the grid body is used for water to pass through to the top.

In some embodiments of the present invention, the bottom of the aerobic zone is provided with a submerged pipeline aeration system, and the submerged pipeline aeration system is connected with a submerged air blower.

The utility model discloses an in some embodiments, the dam body of undercurrent percolation dam is filled modular packing layer, functional packing layer and melon seed lamella from bottom to top in proper order.

In some embodiments of the present invention, the membrane reaction zone is provided with an EHBR enhanced coupling biofilm reactor arranged in a direction perpendicular to the water flow.

In some embodiments of the present invention, the overflow outlet area is provided with a water blocking wall on the side surface, and the inside is a filler area.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model provides a row's mouth normal position clean system sets up the water conservancy diversion passageway and carries out the centralized processing to mixed flow row mouthful sewage specially, can effectively avoid the pollutant to spread to full water body, effectively reduces and pollutes into river volume, promotes pollution treatment efficiency.

2. The utility model provides a arrange a mouthful normal position clean system sets up mixed flow row mouthful pollution treatment process in water conservancy diversion passageway, through setting gradually flocculation and precipitation district, aerobic zone, membrane reaction district and overflow play pool to set up undercurrent infiltration dam in aerobic zone and membrane reaction district juncture, effectively prolong water conservancy dwell time, improve the treatment effeciency, have stronger anti load impact ability, the service life is long.

3. The drain in-situ purification system provided by the utility model has the function of beautifying the landscape by planting plants or arranging potted plants on the wall body of the diversion channel and the top end of the dam body of the undercurrent percolation dam; the copper pennisetum is planted in the net bag on the water surface of the aerobic area, the aerobic environment is created through the double modes of photosynthesis and underwater aeration of plants, emergent aquatic plants are planted at the top end of the filling area of the overflow water outlet area, the effect of 'quasi-undercurrent wetland' is exerted, the water body purification effect is improved, and the effect of beautifying the landscape is achieved.

Drawings

Fig. 1 is a schematic plan view of an in-situ exhaust purification system according to an embodiment of the present invention.

Fig. 2 is a schematic sectional view of an in-situ purification system of an embodiment of the present invention.

Reference numerals are as follows:

1-a flow guide channel, 2-a flocculation precipitation zone, 3-a grid, 4-an aerobic zone, 5-a subsurface flow percolation dam, 6-a membrane reaction zone, 7-an overflow water outlet zone and 21-an automatic dosing device; 22-sludge zone; 30-a grid body; 31-fixed pier; 32-diagonal bracing; 41-submerged pipeline aeration system; 42-submerged blowers; 43-a string bag; 61-EHBR intensified coupling biofilm reactor; 62-water outlet pipe; 71-water blocking wall; 72-a packing region; a-potted plants; b-copper cash; c-artificial aquatic weeds; d-emergent aquatic plants.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present application are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, change of the ratio relationship or adjustment of the sizes should still fall within the scope of the present invention without affecting the functions and the achievable purposes of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

The utility model provides a discharge port in-situ purification system, referring to fig. 1 and fig. 2, comprising a diversion channel 1, a flocculation precipitation zone 2, a grid 3, an aerobic zone 4, a subsurface infiltration dam 5, a membrane reaction zone 6 and an overflow water outlet zone 7;

the flow guide channel 1 is used for guiding the mixed flow outlet water to and limiting the mixed flow outlet water in the flow guide channel 1, so that pollution diffusion is avoided;

the inlet of the flocculation precipitation zone 2 is communicated with the flow guide channel 1 and is used for realizing flocculation precipitation of organic matters and suspended particles in the outlet water of the mixed flow discharge port;

the grating 3 is arranged at the outlet of the flocculation and sedimentation area 2 and is used for intercepting floating objects in the water discharged from the flocculation and sedimentation area 2;

an inlet of the aerobic zone 4 is communicated with an outlet of the flocculation precipitation zone 2 and is used for carrying out aerobic treatment on the water body intercepted by the grating 3;

the undercurrent percolation dam 5 is arranged between the outlet of the aerobic zone 4 and the inlet of the membrane reaction zone 6 and is used for removing suspended particles in the effluent of the aerobic zone 4;

the inlet of the membrane reaction zone 6 is communicated with the outlet of the aerobic zone 4, and the bottom of the membrane reaction zone 6 is provided with a water outlet pipe 62 for carrying out biofilm treatment on the water body passing through the undercurrent percolation dam 5;

the inlet of the overflow water outlet area 7 is communicated with the water outlet pipe 62 at the bottom of the membrane reaction area 6, and water entering the overflow water outlet area 7 is extruded by space and overflows upwards for discharge.

The utility model provides a row of mouthful normal position clean system, refer to fig. 1 and fig. 2, lead mixed flow row of mouthful play water to water conservancy diversion passageway 1, confine mixed flow row of mouthful pollutant in the passageway scope of water conservancy diversion passageway 1 itself, avoid the pollutant to the diffusion pollution of the whole water body; guiding the mixed flow outlet water to a flocculation and precipitation area 2 through a guide channel 1, flocculating and precipitating organic matters and suspended particles in the mixed flow outlet water by adding a medicament, and removing the generated precipitated substances through periodic sludge discharge; the effluent of the flocculation settling zone 2 is intercepted by a grid 3, and floating material components which are easy to cause blockage in the water body are removed; the water body intercepted by the grating 3 enters an aerobic zone 4, and aerobic microorganisms are enabled to exert the degradation capacity on organic matters in the water body through the aerobic environment of the aerobic zone 4; a undercurrent percolation dam 5 is arranged at the juncture of the aerobic zone 4 and the membrane reaction zone 6 and is used for further adsorbing, filtering and intercepting suspended particles in the effluent of the aerobic zone so as to avoid blocking a biomembrane reactor of the membrane reaction zone 6; the water body passing through the undercurrent percolation dam 5 enters a membrane reaction zone 6, organic matters, nitrogen, phosphorus and the like contained in the sewage are adsorbed and decomposed by a membrane component of the membrane reaction zone 6 to be removed, so that the sewage is purified, a water outlet pipe 62 is arranged at the bottom of the membrane reaction zone 6, the purified water body enters an overflow water outlet zone 7 through the water outlet pipe 62, and the water body of the overflow water outlet zone 7 is extruded by space, overflows upwards, is discharged and finally flows into a river (whole water body).

In some embodiments of the present invention, the wall of the diversion channel 1 is a brick-concrete structure, a waterproof enclosure, or a double-row wooden pile filled with filler. The height of the wall body of the flow guide channel 1 exceeds the normal water level by 10cm, and the width of the flow guide channel 1 can be determined according to the actual condition of the water body.

In some embodiments of the present invention, referring to fig. 1 and 2, potted plant a is placed on the top of the wall of the diversion channel 1, and the landscape is dotted.

In some embodiments of the utility model, refer to fig. 2, flocculation and precipitation district 2 is equipped with automatic reagent feeding device 21 for throw the flocculating agent, realize mixed flow row's mouth and go out the flocculation and precipitation of organic matter and suspended particles thing in the water, provide earlier stage guarantee for the steady operation of follow-up technology.

Suspended particles, organic matters, colloid and the like in the water body of the flocculation precipitation zone 2 react with the flocculating agent, and the generated flocculating constituent is separated from the water phase under the action of gravity and precipitated at the bottom to form sludge. In some embodiments of the present invention, referring to fig. 2, a sludge area 22 is disposed at the bottom of the flocculation sedimentation area 2 for periodic sludge discharge.

In some embodiments of the present invention, referring to fig. 2, the grid 3 includes a grid body 30, a fixed pier 31 and an inclined strut 32, the fixed pier 31 is disposed at a height of 2/3 of the bottom of the grid body 30, a top of one end of the inclined strut 32 is fixedly connected to a top of the grid body 30, and the other end of the inclined strut is fixed to a bottom horizontal plane of the fixed pier 31, the grid body 30, the bottom horizontal plane of the fixed pier 31 and the inclined strut 32 form a triangular stable structure, so that the grid body 30 is firmly fixed, and is prevented from tilting or loosening under long-term impact of water flow; the fixed pier 31 adopts a steel-concrete structure or a brick-concrete structure; the 1/3 height department of grid body 30 is used for the water to pass through to the top, makes things convenient for the supernatant of flocculation and precipitation district 2 to pass through, avoids the sediment that the flocculation produced to get into aerobic zone 4, causes the pipeline aeration system that sinks in aerobic zone 4 to block up.

In some embodiments of the present invention, referring to fig. 2, the bottom of the aerobic zone 4 is provided with a submerged pipeline aeration system 41, and the submerged pipeline aeration system 41 is connected with a submerged air blower 42 to provide power for the submerged pipeline aeration system 41. In some embodiments of the present invention, the net bag 43 is arranged on the water surface of the aerobic zone 4, the copper coin grass b is planted in the net bag 43, and the aerobic environment is created by the double modes of photosynthesis and underwater aeration of the plant. The arrangement mode of the net bag 43 is not limited, and the water surface of the aerobic zone 4 can be covered uniformly.

In some embodiments of the present invention, referring to fig. 2, the aerobic zone 4 is laid with artificial aquatic weeds c underwater, which provides a carrier for the reproduction of microorganisms, and further promotes the aerobic microorganisms to exert purification capacity.

In some embodiments of the present invention, referring to fig. 2, the dam body of the subsurface infiltration dam 5 is sequentially filled with a modular packing layer, a functional packing layer and a melon seed layer from bottom to top; preferably, the modular filler layer consists of a plurality of filler modules, each filler module comprises a square cage body and a filler arranged in the square cage body, and the filler is a biological contact oxidation filler or a suspension filler; the functional filler layer is formed by stacking functional fillers selected from gravel, volcanic rock, zeolite and the like; the melon seed slice layer is formed by laying melon seed slices. When the effluent of the aerobic zone 4 passes through the dam body of the undercurrent percolation dam 5, the filler in the dam body of the undercurrent percolation dam 5 can play the roles of adsorption, interception and filtration, thereby ensuring the stability of the membrane component of the membrane reaction zone 6.

In some embodiments of the present invention, referring to fig. 1 and 2, the top end of the dam body of the undercurrent percolation dam 5 is covered with planting soil, and emergent aquatic plants d are planted in the planting soil to beautify the landscape.

In some embodiments of the present invention, referring to fig. 2, the EHBR reinforced coupling bio-membrane reactor 61 is disposed in the vertical water flow direction of the membrane reaction zone 6, the core part of the EHBR reinforced coupling bio-membrane reactor 61 is a hollow fiber membrane and a bio-membrane, the bio-membrane is attached to and grows on the outer surface of the oxygen permeable hollow fiber membrane, the air directly supplies oxygen to the bio-membrane through the hollow fiber membrane, the bio-membrane fully contacts with sewage, and organic matters and nitrogen and phosphorus in the sewage are adsorbed, decomposed and removed by the bio-membrane, thereby effectively purifying the sewage.

In some embodiments of the present invention, referring to fig. 2, the overflow outlet zone 7 is provided with a water blocking wall 71 at the side and a filler zone 72 inside.

In some embodiments of the present invention, the water blocking wall 71 is a brick-concrete structure, a prefabricated wooden pile, or a double-row wooden pile filled with filler.

In some embodiments of the present invention, referring to fig. 2, the packing 72 is gravel. In some preferred embodiments of the present invention, the gravel is large gravel with a particle size range of 3-6 cm, and the water body is extruded through the space and overflows upwards to be discharged and finally flows into the external river (whole water body).

In some embodiments of the present invention, referring to fig. 2, the water blocking wall 71 is placed with potted plant a on top.

In some embodiments of the present invention, referring to fig. 2, the top of the packing area 72 is planted with emergent aquatic plants d.

The utility model discloses overflow water outlet zone 7 combines together for surface greening plant through gravel packing and hydrophilic plant, and the biomembrane that can make full use of filler surface growth, abundant root system and topsoil and the effect that the filler dams etc to improve sewage treatment effect and throughput, the effect of "class undercurrent wetland" of performance, and promote the view.

The working principle is as follows: referring to fig. 1 and 2, when the discharge in-situ purification system of the present invention operates, the mixed flow discharge outlet is firstly guided to the flow guide channel 1, the mixed flow discharge outlet pollutant is limited in the flow guide channel 1 through the wall of the flow guide channel 1, so as to avoid the pollutant from diffusing and polluting the whole water body, and meanwhile, the potted plant a is placed on the wall of the flow guide channel 1, so as to decorate the landscape and beautify the landscape; the water from the mixed flow discharge outlet enters a flocculation precipitation zone 2 along a flow guide channel 1, a flocculating agent is added into the water body through a dosing device 21, so that organic matters and suspended particles in the water from the mixed flow discharge outlet are flocculated and precipitated, the generated precipitated substances are gathered in a sludge zone 22, and the sludge is discharged outside periodically; the water outlet part of the flocculation precipitation zone is provided with a grid 3, the lower part of a grid body 30 is fixed by adopting a brick-concrete structure fixing pier 31, the top of one end of an inclined strut 32 is fixedly connected with the top of the grid body 30, the other end of the inclined strut is fixed on the horizontal plane at the bottom end of the fixing pier 31, the grid body 30, the horizontal plane at the bottom end of the fixing pier 31 and the inclined strut 32 form a triangular stable structure, so that the grid body 30 is firmly fixed, floating matters which are easy to cause blockage in a water body are removed through the interception effect of the grid 3, supernatant liquor of the flocculation precipitation zone passes through the top of the grid body 30 from the 1/3 height part, and the situation that sediments generated by flocculation are not completely settled and then enter an aerobic zone 4 to cause blockage of an aeration system in the aerobic zone and influence the normal operation of the system can be avoided; the water body intercepted by the grating 2 enters an aerobic zone 4, the aerobic zone 4 is provided with a submerged pipeline aeration system 41, the submerged pipeline aeration system 41 is connected with a submerged blower 42 to provide power for the submerged pipeline aeration system 41, meanwhile, a tucket 43 mode is adopted to plant a plant copper coin grass b on the water surface in the zone, an aerobic environment is created through the double modes of photosynthesis and underwater aeration of the plant, an artificial water grass c is laid underwater to provide a carrier for the reproduction and attachment of microorganisms, and further, the aerobic microorganisms are promoted to exert purification capacity; an undercurrent percolation dam 5 is arranged at the junction of the aerobic area 4 and the membrane reaction area 6, a dam body of the undercurrent percolation dam 5 is sequentially filled with a modular packing layer, a functional packing layer and a melon seed layer from bottom to top, when water discharged from the aerobic area passes through the dam body, the packing can further adsorb, filter and intercept suspended particles in the water discharged from the aerobic area so as to avoid blocking a biomembrane reactor of the membrane reaction area, meanwhile, the top end of the dam body is covered with planting soil for about 15cm, emergent aquatic plants are planted, and the function of beautifying the landscape is achieved; the water body passing through the undercurrent percolation dam 5 enters a membrane reaction area 6, the membrane reaction area 6 is arranged in a direction perpendicular to the water flow direction by adopting an EHBR (enhanced coupled biofilm reactor) 14, the core parts of the membrane reaction area, namely a hollow fiber membrane and a biological membrane, are utilized, the biological membrane is attached to and grows on the outer surface of an oxygen-permeable hollow fiber membrane, air directly supplies oxygen for the biological membrane through the hollow fiber membrane, the biological membrane is fully contacted with sewage, organic matters, nitrogen, phosphorus and the like in the sewage are adsorbed, decomposed and removed by the biological membrane, so that the sewage is effectively purified, a water outlet pipe 62 is arranged at the bottom of the membrane reaction area 6, the purified water body enters an overflow water outlet area 7 through the water outlet pipe 62, the overflow water outlet area 7 consists of a water blocking wall 71 and an internal filling area 72 on the side surface, the water blocking wall 71 adopts a brick-concrete structure, the filling area 72 adopts gravel filling with large-diameter, so that the water body is extruded through the space, the upward overflow and is finally collected into an external river (whole water body), meanwhile, potted plant a is planted on the water blocking wall 71, and a potted plant d is planted at the top end of the gravel filling area 72, thereby playing the 'similar undercurrent' effect and improving the landscape.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims (10)

1. A drain in-situ purification system is characterized by comprising a diversion channel (1), a flocculation precipitation zone (2), a grid (3), an aerobic zone (4), a subsurface infiltration dam (5), a membrane reaction zone (6) and an overflow water outlet zone (7);

the flow guide channel (1) is used for guiding the mixed flow outlet water to the flow guide channel (1) and limiting the mixed flow outlet water in the flow guide channel (1) to avoid pollution diffusion;

the inlet of the flocculation and precipitation area (2) is communicated with the flow guide channel (1) and is used for realizing flocculation and precipitation of organic matters and suspended particles in the outlet water of the mixed flow discharge port;

the grating (3) is arranged at the outlet of the flocculation and sedimentation area (2) and is used for intercepting floating objects in the water discharged from the flocculation and sedimentation area (2);

an inlet of the aerobic zone (4) is communicated with an outlet of the flocculation precipitation zone (2) and is used for carrying out aerobic treatment on the water body intercepted by the grating (3);

the undercurrent percolation dam (5) is arranged between the outlet of the aerobic zone (4) and the inlet of the membrane reaction zone (6) and is used for removing suspended particles in the effluent of the aerobic zone (4);

the inlet of the membrane reaction zone (6) is communicated with the outlet of the aerobic zone (4), and the bottom of the membrane reaction zone (6) is provided with a water outlet pipe (62) for carrying out biological membrane treatment on the water body passing through the undercurrent percolation dam (5);

an inlet of the overflow water outlet zone (7) is communicated with a water outlet pipe (62) at the bottom of the membrane reaction zone (6), and water entering the overflow water outlet zone (7) is extruded by space and overflows upwards and is discharged.

2. The exhaust in-situ purification system according to claim 1, wherein the wall of the diversion channel (1) is a brick-concrete structure, a watertight enclosure or a double-row wooden pile filled with filler inside;

and/or potted plants (a) are placed at the top end of the wall body of the flow guide channel (1).

3. The drain in-situ purification system according to claim 1, wherein the flocculation precipitation zone (2) is provided with an automatic dosing device (21) for dosing a flocculating agent;

and/or a sludge area (22) is arranged at the bottom of the flocculation sedimentation area (2) and is used for periodically discharging sludge.

4. The exhaust in-situ purification system according to claim 1, wherein the grid (3) comprises a grid body (30), fixed piers (31) and inclined struts (32), the fixed piers (31) are arranged at the bottom of the grid body (30) to 2/3 of the height of the grid body, the top of one end of each inclined strut (32) is fixedly connected with the top of the grid body (30), the other end of each inclined strut is fixed on the bottom horizontal plane of the fixed piers (31), and the grid body (30), the bottom horizontal plane of the fixed piers (31) and the inclined struts (32) form a triangular stable structure; the grid body (30) is used for water body to pass through from 1/3 of the height of the grid body to the top.

5. The discharge in-situ purification system according to claim 1, wherein a submerged pipeline aeration system (41) is arranged at the bottom of the aerobic zone (4), and the submerged pipeline aeration system (41) is connected with a submerged blower (42);

and/or a net bag (43) is arranged on the water surface of the aerobic zone (4), and the copper coin grass (b) is planted in the net bag (43);

and/or the aerobic zone (4) is provided with artificial aquatic weeds (c) underwater.

6. The vent in-situ purification system according to claim 1, wherein a modular packing layer, a functional packing layer and a melon seed layer are sequentially filled in a dam body of the subsurface infiltration dam (5) from bottom to top;

and/or covering planting soil at the top end of the dam body of the undercurrent percolation dam (5), and planting emergent aquatic plants (d) in the planting soil.

7. The vent in situ purification system according to claim 1, wherein the membrane reaction zone (6) is provided with an EHBR enhanced coupling biofilm reactor (61) arranged perpendicular to the water flow direction.

8. The outlet in-situ purification system according to claim 1, wherein the overflow outlet zone (7) is provided with a water-blocking wall (71) at the side and a filler zone (72) at the inside.

9. The taphole in-situ purification system according to claim 8, characterized by the water-stop wall (71) being a brick-and-concrete structure, a prefabricated wooden pile or a double row wooden pile filled with filler inside;

and/or the filling material adopts gravel.

10. The outlet in-situ purification system according to claim 8, wherein the water-blocking wall (71) is provided with potted plants (a) on the top;

and/or emergent aquatic plants (d) are planted at the top end of the filling area (72).

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